Fix issue with downloaded torrent temp files on windows which had illegal characters.

ChangeLog

@@ -60,6 +60,7 @@
 	* Fix the Open Folder option not working with non-ascii paths
 	* Fix the daemon starting with config dir containing spaces
 	* Fix Windows tray submenu items requiring right-click instead of left-click
+	* Fix issue with adding some torrents with illegal characters via url in gtk client
 
 ==== OS X ====
 	* Fix Open File/Folder option

deluge/ui/gtkui/addtorrentdialog.py

@@ -675,8 +675,7 @@ class AddTorrentDialog(component.Component):
 
         # Create a tmp file path
         import tempfile
-        import os.path
-        tmp_file = os.path.join(tempfile.gettempdir(), url.split("/")[-1])
+        (tmp_handle, tmp_file) = tempfile.mkstemp()
 
         def on_part(data, current_length, total_length):
             if total_length: